Anssi Karna

Title: Anssi Karna: Innovator in Coating and Fiber Pulp Technologies

Introduction

Anssi Karna is a notable inventor based in Inkeroinen, Finland. He has made significant contributions to the fields of coating technologies and fiber pulp analysis. With a total of 3 patents to his name, his work reflects a commitment to innovation and practical applications in industrial processes.

Latest Patents

One of Anssi Karna's latest patents is an "Apparatus for coating a web with coating mix." This invention describes a short-dwell coater designed for applying a coating mix onto a web against a rotating backing roll. The coater features a support structure, a feeder means for delivering the coating mix into an application zone, and a doctor blade that presses against the web to remove excess coating mix. A unique aspect of this invention is the inclusion of a predoctoring blade, which smooths out disturbances in the coating mix flow before it reaches the actual doctor blade.

Another significant patent is the "Method for determining the properties of fiber pulp." This method involves separating a predetermined volume of fiber pulp, measuring its temperature, and filtering water from it using a pressure difference. The invention allows for the accurate determination of pulp properties by measuring the resisting effect of the pulp cake on air flow and weighing the pulp cake. The apparatus developed for this method includes a stirrer, temperature measurement device, and means for directing the specimen onto a wire for water removal.

Career Highlights

Anssi Karna has worked with prominent companies in the paper machinery industry, including Oy Tampella Ab and Valmet Paper Machinery Inc. His experience in these organizations has contributed to his expertise in coating and pulp technologies.

Collaborations

Throughout his career, Anssi has collaborated with notable professionals such as Heikki U Liimatainen and Jukka Heikkinen. These collaborations have likely enriched his work and led to further advancements in his field.

Conclusion

Anssi Karna's innovative patents and career in the paper machinery industry highlight his significant contributions to coating and fiber pulp technologies. His work continues to influence the industry and showcases the importance of innovation in practical applications.